At the moment, manufacturers are recommending Cascade 2-in-1 tablets for best results. Many of you, including technicians, do not realize that these are at their best when tossed in the bottom of the tub, not placed in the dispenser. They are slow dissolving for a reason.
P&G and other detergent makers are struggling to come up with an ingredient to replace phosphates and one will be approved very soon. Phosphates were not hazardous, it's just that their fertilizer properties caused excessive algae to grow in the sewer systems and dischage points. It had been used in dishwasher detergents since they began in the 1950's and finally discontinued in July 2010 due to regulation changes.